16's MIDI out jack can be switched to a thru function that merges MIDI in data with SR-16 MIDI data.

9.1B About Sequencing

Sequencing, the computerized equivalent of tape recording, is a very common and popular MIDI application. The SR-16 is a special-purpose sequencer optimized for drum machine applications.

Sequencing takes advantage of the fact that MIDI data can be time-stamped with rhythmic data and recorded in computer memory. The computer acts like a recorder, but instead of recording audio, it stores digital data that represents the pads you played, the exact order in which you played those pads, and the pad dynamics.

Once stored in memory, the performance can be played back. The principle is the same as a player piano, but instead of having keys triggered by holes in a roll of paper, drum sounds are triggered by data contained in the computer's memory.

The SR-16 also works well as a drum sound expander module for separate stand-alone or computer-based sequencers. Each of MIDI's 16 available channels can carry a unique set of MIDI data. Since all this data travels over one cable, each piece of data includes its appropriate channel ID so that MIDI receivers can "tune in" to a particular channel and accept only that data. The SR-16 can tune in to the channel that plays drum notes, and respond by triggering sounds.

9 . 2 MIDI CHANNEL MESSAGES

There are two main types of MIDI messages. Channel messages, which are channel-specific, consist of Voice and Mode messages. System messages, which do not have a channel number and are received by all units in a system, include Common, Real Time, and Exclusive messages.

9.2A Voice Messages

Playing a pad on the SR-16 produces the following MIDI data:

Note On Corresponds to the pad's assigned MIDI pitch; values can range from 000 (lowest note) to 127 (highest note). Middle C is 60.

Note Off This indicates the end of the note.

Velocity Corresponds to the dynamics of your playing; values range from 001 (minimum velocity) to 127 (maximum velocity).

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Alesis SR-16 manual 1B About Sequencing, Midi Channel Messages, 2A Voice Messages
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SR-16 specifications

The Alesis SR-16 is a legendary drum machine that has carved its niche in the realm of music production since its initial release in the early 1990s. Renowned for its affordability and user-friendly interface, the SR-16 has become a staple for musicians, producers, and composers across various genres. Its robust set of features and reliable performance make it an attractive choice for both beginners and seasoned professionals.

One of the standout features of the Alesis SR-16 is its expansive library of high-quality drum sounds. It houses 233 onboard drum and percussion sounds, encompassing everything from acoustic drum kits to electronic beats. The samples are derived from real instruments and meticulously recorded to provide a rich, authentic sound that can enhance any musical project. Additionally, the SR-16 allows users to layer and mix different sounds, giving them the flexibility to create customized drum tracks.

The SR-16 employs advanced sequencing capabilities, letting users create intricate patterns and beats with ease. It offers 50 preset patterns, spanning multiple musical styles, which can be edited and modified to suit individual needs. Users can also record their own patterns in real-time or step mode, allowing for greater creativity and control over the final output.

Alesis has designed the SR-16 with a user-friendly interface, featuring a backlit LCD screen and intuitive layout that simplifies the programming process. This accessibility makes the drum machine ideal for live performances as well as studio sessions. Furthermore, the SR-16 includes facilities for triggering sounds via MIDI, enabling seamless integration with other hardware and software setups.

Another notable feature is the onboard effects processing, which enhances the sound quality and provides additional sonic possibilities. The SR-16 includes reverb and filter effects, allowing users to manipulate their sounds and create depth within their musical arrangements.

The compact and rugged build of the Alesis SR-16 makes it suitable for musicians on the go. With its substantial battery life and adaptability for power sources, it is a reliable companion for live performances or recording sessions.

In conclusion, the Alesis SR-16 stands out as an essential tool for anyone looking to expand their musical toolkit. With its high-quality sounds, intuitive sequencing, and versatility, it remains a relevant choice decades after its introduction, merging classic design with modern technological advancements. Whether for crafting beats in the studio or performing live, the SR-16 delivers a unique and engaging drumming experience.
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